And if they are not convinced by both these signs and still do not heed you, take some water from the Nile and pour it on the dry ground, and it—the water that you take from the Nile—will turn to blood on the dry ground.”

And the LORD said to Moses, “When you return to Egypt, see that you perform before Pharaoh all the marvels that I have put within your power. I, however, will stiffen his heart so that he will not let the people go.